I would consider documentation and history the most critical factor. There is too many scum bags out there where you could almost build any car you wanted and get a POP, Trim Tag, and build sheet, all numbers matching to boot. Without the history you are not a 100% sure what you are winding up with. Thats why real known cars are worth so much and if they have all the original parts you got one of only a handful of what are left. These cars were purchased with one thing in mind, racing, and if you do that right the parts dont last long. Me personally, Id rather find one than buy one but that aint very easy nowadays, but im still looking...
